Simple to use switch to connect your corded or wireless telephone headset to your PC. Works through the PC's sound card and speaker ports. Connect your office headset to your phone and computer, and switch between them at the touch of a button! This product is a much simpler technology in comparison to the ZoomSwitch ZMS line of products. We offer it for those who have an absolute need to plug into the soundcard, and it is therefore less versatile and it may work with fewer phone set models.: